/Engine/Source/Runtime/Landscape/Classes/LandscapeProxy.h
bool ExportToRawMeshDataCopy ( const [FRawMeshExportParams](API\Runtime\Landscape\ALandscapeProxy\FRawMeshExportParams) & InExportParams, [FMeshDescription](API\Runtime\MeshDescription\FMeshDescription) & OutRawMesh, const [UE::Landscape::Nanite::FAsyncBuildData](API\Runtime\Landscape\FAsyncBuildData) & AsyncData ) const